Adjustable printer&#39;s block.



No. 799,511. PATENTED SEPT. 12, 1905.

E. L. WILSON,

ADJUSTABLE PRINTERS BLOCK.

APPLICATION FILED OUT. 3,1904- UNITED STATES PATENT carton.

EDWIN L. WILSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ROBERT M.EASTMAN, OF CHICAGO, ILLINOIS.

ADJUSTABLE PRINTERS BLOCK.

Specification of Letters Patent.

Patented Sept. 12, 1905 Application filed October 8, 1904. Serial No.227,682.

To (LZZ 1071/0171, it may concern:

Beitknown that I, EDWIN L. WVILsON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Adjustable Printers Blocks, ofwhich the following is a specification.

This invention relates to a side brass and a block to be used incombination therewith, the said block serving as a base for the ordinaryprinting-plate or for a plate employed in three-color work.

The object of the invention is to enable the same blocks to be used withboth kinds of plates.

Blocks heretofore designed for use with ordinary printing-plates havebeen useless for use with work with three-color plates, owing to theclose register which must be maintained in printing one color over theother, and in the color-process work it has been necessary to equip anoffice with electrotype-bases designed especially'for use with thecolor-printing plates and not adapted for use with the ordinaryprinting-plate.

With this object in view my invention consists in a block andbrass stripwhich can be easily and quickly adapted to accommodate eitherthree-color or ordinary printing plates and which will also be adaptedfor use with various-sized plates.

This invention is also an improvement upon my former invention, forwhich I was granted Letters Patent N 0. 640,346, dated January 2, 1900.

In printing from plates designed for threecolor or process, where, asbefore stated, each color must be in absolute register with thatpreviously printed, it becomes necessary to have a block for holding theplate provided with side clutches or hooks on all sides, and in a blockdesigned for both kinds of plates the side brasses must be easilyremovable and to avoid confusion in replacing the brasses must beinterchangeable.

In the accompanying drawings, illustrating my improvement, Figure 1 is aperspective view showing block, and two side brasses, a third side brassbeing shown detached. Fig. 2 is a side elevation of a block, partly insection.

Fig. 3 is a plan view, and Fig. at is a detail perspective view, of oneof the side brasses.

In the drawings, A represents the brasses of uniform length and providedwith an undercut longitudinal groove A. From these side brasses extendinwardly rods or pins B, ofcomparatively short length. The blocks C areprovided with sockets D, formed in the sides of the blocks and adaptedto receive the pins B. The remaining parts are of the usualconstruction. The blocks A are all of the same length, and the distancebetween the pins of each block is also uniform. The sockets D are solocated in the sides of the blocks C that when the blocks are groupedinto a rectangle the sockets D will be grouped into pairs, and thesockets of each pair will register with the pins B of the brasses A, andit will be noted from Fig. 3 that the sockets forming a pair need not beformed in the same block, but may be divided between adjacent blocks. Ona base formed of three blocks, as shown in Fig. 3, two side brasses Awill be arranged upon the longer side of the rectangle on one side andone brass at one end, the end brass connecting two blocks. The threeblocks shown in Figs. 1 and 3 when thus grouped together form akey-block of a size permittingvarious combinations by the grouping of anumber of key-blocks, and by shortening the rods or pins B sockets canbe formed in all of the blocks or sections composing a key-block, thusproviding for the ready adjustment of the side brasses, all of which areinterchangeable.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination with a key-block formed in sections and provided withsockets formed in its sides, of a plurality of brasses of equal lengthand having pins adapted to engage the sockets, the sockets of each blockbeing a uniform distance apart.

2. A device of the kind described comprising a sectional key-blockhaving sockets arranged in pairs, side brasses of uniform length, andpins arranged in pairs and carried by the brasses, each pair of pinsbeing adapted to engage any pair of sockets.

3. A device of the kind described compristhereon a pair of pins adaptedto register ing a plurality of blocks adapted to be corn- With any pairof sockets,

bined into a rectangle, sockets being formed 1 in the sides of saidblocks, said sockets being I EDWIN WILbON' 5 grouped in pairs, thesockets of each pair be- Witnesses:

ing an equal distance apart, and a plurality of J AMES SIPPEY,

brasses of uniform length, each brass having HENRY J AOOBSEN.

